Science Quizzes questions with answers

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Q10501: What is the value of x if: x - 21 = 20

Answer: 41

💡 x = 20 + 21 = 41; check: 41 - 21 = 20.

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Q10502: What is the missing number: ? + 69 = 85

Answer: 16

💡 Missing number = 85 - 69 = 16; check: 69 + 16 = 85.

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Q10503: What is the missing number: ? + 52 = 136

Answer: 84

💡 Missing number = 136 - 52 = 84; check: 52 + 84 = 136.

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Q10504: What is the missing number: ? + 110 = 261

Answer: 151

💡 Missing number = 261 - 110 = 151; check: 110 + 151 = 261.

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Q10505: What is the missing number: 124 + ? = 230

Answer: 106

💡 Missing number = 230 - 124 = 106; check: 124 + 106 = 230.

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Q10506: What is the value of x if: x - 61 = 28

Answer: 89

💡 x = 28 + 61 = 89; check: 89 - 61 = 28.

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Q10507: What is the missing number: ? + 60 = 215

Answer: 155

💡 Missing number = 215 - 60 = 155; check: 60 + 155 = 215.

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Q10508: What is the missing number: 75 + ? = 86

Answer: 11

💡 Missing number = 86 - 75 = 11; check: 75 + 11 = 86.

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Q10509: What is the missing number: 83 + ? = 174

Answer: 91

💡 Missing number = 174 - 83 = 91; check: 83 + 91 = 174.

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Q10510: What is the value of x if: x - 9 = 32

Answer: 41

💡 x = 32 + 9 = 41; check: 41 - 9 = 32.

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Q10511: What is the missing number: ? + 87 = 158

Answer: 71

💡 Missing number = 158 - 87 = 71; check: 87 + 71 = 158.

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Q10512: What is the value of x if: x - 13 = 20

Answer: 33

💡 x = 20 + 13 = 33; check: 33 - 13 = 20.

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Q10513: What is the missing number: ? + 114 = 174

Answer: 60

💡 Missing number = 174 - 114 = 60; check: 114 + 60 = 174.

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Q10514: What is the value of x if: x - 59 = 102

Answer: 161

💡 x = 102 + 59 = 161; check: 161 - 59 = 102.

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Q10515: What is the missing number: ? + 13 = 159

Answer: 146

💡 Missing number = 159 - 13 = 146; check: 13 + 146 = 159.

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Q10516: What is the missing number: ? + 94 = 128

Answer: 34

💡 Missing number = 128 - 94 = 34; check: 94 + 34 = 128.

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Q10517: What is the missing number: 2 + ? = 32

Answer: 30

💡 Missing number = 32 - 2 = 30; check: 2 + 30 = 32.

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Q10518: What is the value of x if: x - 4 = 266

Answer: 270

💡 x = 266 + 4 = 270; check: 270 - 4 = 266.

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Q10519: What is the missing number: ? + 21 = 85

Answer: 64

💡 Missing number = 85 - 21 = 64; check: 21 + 64 = 85.

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Q10520: What is the value of x if: x - 129 = 9

Answer: 138

💡 x = 9 + 129 = 138; check: 138 - 129 = 9.

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